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Thieman Tailgates

Thieman Tailgates – Built to Work. Made to Last.
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Thieman Tailgates

About Thieman Tailgates

Thieman Tailgates is a U.S.-based liftgate manufacturer with over five decades of experience building rugged, high-capacity lift systems. Their product line supports dry vans, reefers, service trucks, and flatbeds with versatile installation options for nearly every fleet application. Matthews Motors offers: • Installation and electrical integration • Replacement lift upgrades • Maintenance and hydraulic troubleshooting • DOT-aligned lift inspections

Vehicle Applications

Compatible with Heavy-Duty Fleets

  • 53′ Dry Vans & Reefers
  • Box Trucks & Straight Trucks
  • Dump Bodies & Flatbeds
  • Vocational and Utility Service Trucks

Parts & Service Support

Repair-Ready Liftgate Services

  • Hydraulic cylinder rebuilds
  • Power unit replacements
  • Liftgate platform repairs
  • Switches, relays, and motor kits

Why Matthews Motors

Certified Heavy-Duty Install Partner

  • Thieman-certified install team
  • In-house wiring and lift integration
  • Upfit-to-liftgate design coordination
  • Paint-matched installs available

About Thieman Tailgates

Thieman Tailgates is a U.S.-based liftgate manufacturer with over five decades of experience building rugged, high-capacity lift systems. Their product line supports dry vans, reefers, service trucks, and flatbeds with versatile installation options for nearly every fleet application. Matthews Motors offers: • Installation and electrical integration • Replacement lift upgrades • Maintenance and hydraulic troubleshooting • DOT-aligned lift inspections

Vehicle Applications

Compatible with Heavy-Duty Fleets

  • 53′ Dry Vans & Reefers
  • Box Trucks & Straight Trucks
  • Dump Bodies & Flatbeds
  • Vocational and Utility Service Trucks

Parts & Service Support

Repair-Ready Liftgate Services

  • Hydraulic cylinder rebuilds
  • Power unit replacements
  • Liftgate platform repairs
  • Switches, relays, and motor kits

Why Matthews Motors

Certified Heavy-Duty Install Partner

  • Thieman-certified install team
  • In-house wiring and lift integration
  • Upfit-to-liftgate design coordination
  • Paint-matched installs available

Thieman Tailgates – Built to Work. Made to Last.

Matthews Motors installs Thieman liftgates across trailers, vocational trucks, and fleet platforms that demand strength and reliability.

Hydraulic Pump Assemblies & Components

Thieman provides a wide selection of complete hydraulic power units and replacement parts to support its liftgate lineup. These assemblies are built for durability and serviceability across a range of models, from legacy pumps to current high-pressure systems. Complete power units and service kits are available for installation and maintenance.
  • Active Power Units: 4400241, 4400321, 4400351, 4400421, 4400871, 4400901, 4404, 4411, 4440, 4441, 4442, 4443, 4463, 4465, 4466, 4469, 4472, 4473, 4474, 4475, 4476, 4498, 4499
  • Service-Only Units: 4400091, 4400701, 4400841, 4400851

Ready To Roll Inventory

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Lift Smarter with Thieman

Upgrade your fleet with rugged and reliable Thieman liftgates.